Our Free-Flow triple-zip design ensures your sleeping bag retains maximum warmth and efficiency when needed and multiple ventilation options when its not. The half zip on the right side of the bag (left side on womens bags) provides freedom of movement for both arms, additional ventilation and allows the top third of the bag to be folded down as a mini quilt when the mercury climbs higher than expected.

The Sea to Summit Ascent -9C is a premium down sleeping bag for cold-weather adventures. It provides warmth even in freezing temperatures. The bag is lightweight and features a relaxed mummy shape for comfort. The free-f